The Fenix TK21R flashlight offers a maximum output of 3600 lumens and can project a beam up to 480 meters, thanks to its SFT90 LED. It is powered by a single Fenix ARB-L21-6000 rechargeable battery, and can be charged via a USB-C port. The flashlight has an impressive runtime of up to 72.5 hours. The USB-C charging port is cleverly concealed within an inner waterproof design, maintaining the flashlight's rugged waterproof capabilities. When using the included USB-C cable and a 9V 3A charging adapter (not included), the TK21R can be fully recharged in just 1.5 hours.

The Fenix TK21R features an intuitive dual tail switch for easy operation:

- Tactical Switch: Tap for momentary-on, press fully for constant-on, and press for an instant burst.

- Functional Switch: In any state, you can access instant Strobe mode, and when the light is on, a single click allows you to select the output level.

This flashlight is equipped with innovative intelligent overheat protection, which prevents high surface temperatures and potential burns by ensuring the temperature does not exceed 55°C. Additionally, the TK21R has a waterproof rating of IP68 and can withstand impacts from falls of up to 1 meter.

Brightness Levels:
Burst: 3600 lumens, 2hrs 30mins runtime, 480 meters
High: 1000 lumens, 3hrs 30mins runtime, 260 meters
Med: 350 lumens, 7hrs 30mins runtime, 150 meters
Low: 30 lumens, 72hrs 30mins runtime, 45 meters
Strobe: 3000 lumens

The TK21R includes: 1x ARB-L21-6000 battery, Holster, Lanyard, 2x Spare O-rings, USB Type-C charging cable, User manual and Warranty card.